import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'

Vue.use(VueRouter)

// const routes = []

const router = new VueRouter({
  routes: [{
      path: '/',
      redirect: '/login'
    },
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      component: Home
    }
  ]
})

// 挂载路由导航守卫 to去哪form从哪来 next放行函数(/login)强制转去login
router.beforeEach((to, from, next) => {
  // 如果访问login直接访问即可
  if (to.path === '/login') return next()
  // 获取session的token值
  const tokenstr = window.sessionStorage.getItem('token')
  if (!tokenstr) return next('/login')
  next()

})

export default router
